On Fri, 16 Dec 2011 20:16:51 +1300, Michael Hudson-Doyle <michael.hudson@canonical.com> wrote:
> 
> It's a tangent, but would this sort of thing allow a "undo last tagging
> operation" command in emacs?
> 

It seems like it would be much simpler to track that information in a
data structure in emacs? Undo info is a frequently updated stack while
logs are naturally a queue. Also, implmenting a list of tagging
operations in emacs sounds way easier than anything we talked about
here.

d